CN2256198Y - Individual calling device with speeching function for telephone - Google Patents
Individual calling device with speeching function for telephone Download PDFInfo
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- CN2256198Y CN2256198Y CN 96208096 CN96208096U CN2256198Y CN 2256198 Y CN2256198 Y CN 2256198Y CN 96208096 CN96208096 CN 96208096 CN 96208096 U CN96208096 U CN 96208096U CN 2256198 Y CN2256198 Y CN 2256198Y
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Abstract
The utility model relates to a telephone individual calling device with function of speech calling, which is composed of a connector, a simulated off-hook unit, an off-hook judging unit, a decoding and signal sound preprocessing unit, a microcomputer circuit, a recording keyboard, a speech recording and playing unit, an audio output unit and a power supply. The utility model is characterized in that the output of the simulated off-hook unit, the input of the off-hook judging unit and the input of the decoding and signal sound preprocessing unit are connected with the connector; the control input of the simulated off-hook unit is connected with the output of a microcomputer; the output of the off-hook judging unit is connected with the input of the microcomputer; the output of the decoding and signal sound preprocessing unit is connected with the input port of the microcomputer; the scanning line of the recording keyboard is connected with the data bus of the microcomputer; the address port and the control input of the speech recording and playing unit are connected with the output of the microcomputer, and the speech output of the input of the audio output unit and the connector. The utility model solves the problem of called individual automatic discrimination of the ordinary telephone.
Description
The utility model relates to a kind of phone-specific individual's calling set, belongs to domain of communication equipment.
Phone is the visual plant of our communication.The telephone set quantity that we have increases sharply.But no matter what increase, below this situation inevitable always: in many occasions, the several people has a telephone set; Perhaps count a few telephone sets of the common use of people.This just produces a problem, behind the ringing telephone stations, we how could not off-hook just can know it is Li Si's phone immediately, or king five, or Zhang San? the automatic distinguishing of Here it is called individuality.In order to address this problem, the inventor had once designed a kind of personal call machine (number of patent application 96203435.5) with voice call function.Can but how the ordinary telephone set that people have purchased also be called out individual number with synthetic speech? this is still the problem that ordinary telephone set faces.
If we give everyone people number one by one of personnel of some telephone sets on a shared telephone set or the shared telephone wire, Zhang San a guy number " 1 " for example, Li Si a guy number " 2 ", king five a guy number " 3 ".These people number deposit in the memory of individual's calling set in advance with the form of audio digital signals.Individual's calling set and ordinary telephone set are attempted by on the same telephone wire.After individual's calling set is received the bell signal that switch sends here, connect automatically, form false off hook state." I am a personal call, request individual number, pout to calling party's transmission then! ", caller is heard and " is pouted! " after transfer individual number, as " 2 ".This individual number arrives called phone machine and individual's calling set with the form of double-audio signal or burst signal by switch.Individual's calling set amplifies back input decoding circuit with this signal, and the number that solves makes VODER synthesize corresponding analog voice signal as triggering signal, i.e. " No. 2 phones " or " Li Si's phone ", and export by loudspeaker.Like this, the called subscriber just can hear the calling of " No. 2 phones " or " phone of Li Si " and so on.So far, problem just can solve.
The purpose of this utility model provides a kind ofly can be discerned the other side and dial individual number, and then with phone-specific individual's calling set of audio call individual code name, with the called individual automatic distinguishing problem of solution ordinary telephone set.
The purpose of this utility model realizes by following proposal: a kind of phone individual calling set with voice call function has a shell, and connector, simulation off-hook, off-hook judgement, decoding and signal tone preliminary treatment, microcomputer circuit, recording keyboard, speech recording and reproducing, audio frequency output, all unit of power supply are housed in the shell.Wherein: the input connecting connector of the output of simulation off-hook unit, input, decoding and the signal tone pretreatment unit of off-hook judging unit; The control input of simulation off-hook unit connects an output of microcomputer circuit; The output of off-hook judging unit connects an input of microcomputer circuit; The output of decoding and signal tone pretreatment unit connects the signal input of microcomputer circuit; The input-output line of recording keyboard unit connects the data/address bus of microcomputer circuit; The address mouth of voice recording and playing back unit connects the delivery outlet of microcomputer circuit, and the control input end of voice recording and playing back unit connects the control output end of microcomputer circuit, the input and the connector of the voice output termination audio output unit of voice recording and playing back unit.
This device is in parallel with telephone set.It has ring scanning, the three kinds of states of calling out, record.
During on-hook, microcomputer circuit scan rings signal and recording keyboard do not send other control action.
When calling was arranged, bell signal was sent into microcomputer circuit through decoding and signal tone pretreatment unit, after it is confirmed, controlled the action of simulation off-hook by the latter, formed false off-hook.Microcomputer circuit is sent the voice signal of " requesting individual number " again to connector by voice recording and playing back unit then, the individual that the calling party sends here number is after decoding and signal tone pretreatment unit are delivered to microcomputer circuit, microcomputer circuit just with in the voice recording and playing back unit to should individual number voice " XXX, your phone " export by audio output unit.This is a call state.After this, if called off-hook, then off hook signal is delivered to microcomputer circuit by the off-hook judging unit, and microcomputer circuit is just controlled simulation off-hook unit cancellation simulation off-hook, but like this called phone machine with regard to normal talking.
Keyboard has key to press if microcomputer circuit detects recording, and this device just enters recording state.
The utlity model has following advantage:
1. can make some people of a telephone set of common use before answering the call, just know it is whose phone, avoid messenger call each other, so not only save the time, also improve working environment;
2. in a sense, it can make a public personal call machine be used as some private telephones and use, and is not only easy to use, but also can reduce the quantity of telephone set and telephone wire.
Below in conjunction with drawings and Examples the utility model is elaborated.
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 to Fig. 6 is respectively the circuit theory diagrams of five embodiment of the present utility model.
The utility model is the phone individual calling set with voice call function, it has a shell, sees also Fig. 1: connector 1, simulation off-hook 2, off-hook judgement 3, decoding and signal tone preliminary treatment 4, microcomputer circuit 5, recording keyboard 6, speech recording and reproducing 7, audio frequency output 8, power supply 9 all unit are housed in the shell.Wherein: the input connecting connector 1 of the output of simulation off-hook unit 2, input, decoding and the signal tone pretreatment unit 4 of off-hook judging unit 3; The control input of simulation off-hook unit 2 connects an output of microcomputer circuit 5; The output of off-hook judging unit 3 connects an input of microcomputer circuit 5; The output of decoding and signal tone pretreatment unit 4 connects the signal input of microcomputer circuit 5; The scan signal line of recording keyboard unit 6 connects the data/address bus of microcomputer circuit 5; The address mouth of voice recording and playing back unit 7 connects the delivery outlet of microcomputer circuit 5, and the control input end of voice recording and playing back unit 7 connects the control output end of microcomputer circuit 5, the input and the connector 1 of the voice output termination audio output unit 8 of voice recording and playing back unit 7.Simulation off-hook unit 2 is composed in series by resistance and grammed switch, and the control input of its grammed switch connects the output of microcomputer circuit 5.
The utility model is in parallel with telephone set.It has ring scanning, the three kinds of states of calling out, record.
During on-hook, microcomputer circuit 5 scan rings signals and recording keyboard 6 do not send other control action.
When calling was arranged, bell signal was sent into microcomputer circuit 5 through decoding and signal tone pretreatment unit 4, after it is confirmed, controlled 2 actions of simulation off-hook unit by the latter, formed false off-hook.Microcomputer circuit 5 is sent the voice signal of " requesting individual number " again to connector 1 by voice recording and playing back unit 7 then, the individual that the calling party sends here number is after decoding and signal tone pretreatment unit 4 are delivered to microcomputer circuit 5, and microcomputer circuit 5 just will be exported by audio output unit 8 voice signal that should the individual number in the voice recording and playing back unit 7.This is a call state.After this, if called off-hook, then off hook signal is delivered to microcomputer circuit 5 by off-hook judging unit 3, and microcomputer circuit 5 just control simulation off-hook unit 2 cancellation simulation off-hooks, but like this called phone machine with regard to normal talking.
Keyboard 6 has key to press if microcomputer circuit 5 detects recording, and the utility model just enters recording state.
See also Fig. 2 again.Single-chip microcomputer U201, address latch U202, memory U203 connection routinely constitute microcomputer circuit; The VODER U501 of built-in sound bank and peripheral circuits thereof, microphone MIC, ring-back control relay RL701, calling control relay RL702 constitute voice recording and playing back unit; Bus receiver U602, latch U601,4 * 4 push-button array K601 and RP601 constitute the recording keyboard unit; Power amplifier U701 and the loudspeaker SPK formation audio output unit that picks out from this power amplifier output OUT; Transformer T301, amplifier U302, double-tone decoder U301 frequently constitute personal number decoding and signal tone pretreatment unit; J1 is a connector; The normally opened contact PC1-PC2 series arm of resistance R 401 and simulation offhooking relay RL301 constitutes simulation off-hook unit; Rectifier D401-D404 reaches the comparator U401:A that picks out from the output of this rectifier and constitutes the off-hook judging unit; Transformer T101, two rectifier D101-D108, pressurizer U101 and on every side element constitute power supply, export positive 5V and positive 15V direct current.
Wherein: simulation off-hook unit and connector J1 also connect, and its relay R L301 forms a grammed switch, are controlled by transistor Q301 by the output 15 of U201.The input connecting connector J1 of rectifier D401-D404 in the off-hook judging unit, the output of its comparator U401:A connects the input 8 of U201, and U401:A and peripheral circuits thereof constitute a voltage comparator, are used for judging called whether off-hook.In decoding and signal tone pretreatment unit, the former edge joint connector J1 of its transformer T301, the secondary of its transformer connects the input of its amplifier U302:A, in the output of this amplifier, one the tunnel connects the input 14 of U201 through amplifier U302:B, another road meets the input IN-of its decoder U301, the output 11-15 of its decoder U301 connects the signal input end pin 28 of U201,27,11,10 and 13, U301 is used for double-audio signal is decoded, U302 then will be bell signal, pulse digital signal and busy-back signal are imported single-chip microcomputer after amplifying shaping, so that discern and decode.In the recording keyboard unit, the output Q1-Q4 of its latch U601 connects the column scan signal line of its push-button array, the input 1A1-1A4 of its bus receiver U602 connects the line scan signals line of its push-button array, and the input D1-D4 of its latch and the output 1Y1-1Y4 of bus receiver connect the data/address bus of U201; In voice recording and playing back unit, the address mouth A0-A3 of its VODER U501 meets the delivery outlet P10-P13 of U201, the control input end 24 of U501,27 connect the control output end 5 of U201,6, the microphone input 17 of U501,18 meet its microphone MIC, the speech output end 14 one tunnel of U501 is through contact 3-2 and the transformer T301 connecting connector J1 of its ring-back control relay RL701, the contact 2-3 that another Lu Jingqi calls out control relay RL702 connects the input 3 of audio output unit intermediate power amplifier U701, two relay respectively by two outputs 26 and 7 of U201 through transistor Q701, Q702 control.
Narrate operation principle below:
This individual calling set links to each other with telephone wire by connector J1, and it has recording, ring scanning, calls out three kinds of states, and call state does not have off-hook and the on-hook of caller elder generation to affirmation is called, or confirms till the called off-hook from confirming to have bell signal.
During on-hook, if there is not calling, switch is sent the 48V direct current here.Since C301, the C302 on the former limit of transformer T301 and T301 every straight effect, 12 legs of U201 are low level.This moment, individual's calling set was in the ring scanning mode.Single-chip microcomputer U201 will continue scan rings signal and recording keyboard, and not send other control actions.If the telephone set in parallel with individual's calling set is as the caller off-hook, though the part ring-back tone is arranged through T301 this moment, amplitude is less, pass through the attenuation network of forming by R312, R313 and R314 again, amplitude is just littler, pass through D301 at last after, become 12 legs of low level input U201.During conversation, even there is the amplitude of part conversation voice to reach high level, be not 25HZ but single-chip microcomputer can identify them, 1 second continuous, 4 seconds disconnected bell signals.Therefore individual's calling set will be in the ring scanning mode.
When calling is arranged, the bell signal of being sent here by switch is input to telephone set and with it and in the individual's calling set that connects simultaneously, telephone set sends bell signal, and the pulse signal of 25HZ will appear on 12 legs of single-chip microcomputer in individual's calling set, after single-chip microcomputer adds their confirmation, export a high level from 15 legs, make the Q301 conducting, relay R L301 adhesive, contact PC1 and PC2 connect, and form false off-hook.
Behind the false off-hook, switch stops ringing-signal feeding, replaces the direct current about 10V.At this moment, 26 leg output low levels of single-chip microcomputer, the contact 2 and 3 of relay R L701 is linked to each other, single-chip microcomputer P10-P13 exports data then, 5 leg output low levels of last single-chip microcomputer make the 14 legs output voice signal of VODER U501 " request individual number, pout ", this voice signal arrives J1 by contact 2-3, the transformer T301 of RL701, and then is sent to caller through telephone wire.Then, 26 legs of single-chip microcomputer and 5 legs recover high level.And begin to monitor the state of 13,14 legs, so that the receiving number signal.After " toot " heard in caller, can dial and connect words people's individual number.This people number arrives individual's calling set with pulse train or double-tone form frequently, by J1 through T301 to U302:A, divide two-way then, the one tunnel directly arrives the double-tone input of decoder U301 frequently, and 14 legs of single-chip microcomputer are directly imported on another road after U302:B amplifies shaping.If U301 receives double-audio signal, then 13 legs of U201 will become high level by low level, and P30, P31, P26, the P27 of U201 are last simultaneously will receive data, and this is that caller is dialed individual number.If U301 does not receive double-audio signal, then 13 legs of U201 will keep low level, so U201 will monitor its 14 leg, judge whether the pulse signal input.If any pulse signal, then according to its pulse number promptly as can be known individual number.In case judge and received individual number, U201 will be according to this people number from the corresponding voice address of P10-P13 output, and make its 7 leg export high level, make the Q702 conducting, relay R L702 adhesive then in the 5 leg output low levels of U201, thereby makes 14 legs of U501 export corresponding analog voice signal, through the contact 2-3 of RL702, output to loudspeaker SPK after amplifying by power amplifier U701 again.Later on per output in 5 seconds once.This is that we want " XXX, your phone " heard.And between adjacent twice audio call output, still having the tinkle of bells in a second, this tinkle of bells is also synthesized by U501 and outputs to loudspeaker through power amplifier.These signals pass through R701 simultaneously, and T301 and J1 are sent to the calling party as ring-back tone.
After the ring, if called off-hook, then line voltage distribution is decline 1V, so the negative terminal decline 1V of U401:A, and because the discharge process of C402, the anode of U401:A will keep the former current potential of a period of time, and promptly anode is higher than negative terminal, thereby makes the output of U401:A be high level, after U201 detects this signal, promptly export a low level, relay R L301 is discharged, cancel false off-hook from its 15 leg.The called phone machine just can be conversed normally like this.
After the ring, if The Calling Party Hooks On, then switch will be to the called busy-back signal that send.This busy-back signal arrives 14 legs of U201, after U201 identifies busy-back signal, promptly from 15 leg output low levels, to cancel false off-hook through the amplification of J1, T301 and U302.
Since then, individual's calling set enters the ring scanning mode again.Wait for the arrival of bell signal next time, the recording of single-chip microcomputer scanning simultaneously keyboard K601.If there is the REC key to press, individual's calling set enters recording state at once.After pressing REC, promptly key in numeral or * font size, numeral is individual's individual number, and the * font size is public language " your phone ".After aforesaid operations finished, U201 was about to corresponding paragraph number and is placed on the P10-P13 data wire, and this moment, the operator keyed in the STR key again, after U201 scans STR, exported a low level at its 6 leg, and U501 promptly enters recording state.The operator says name or its code name facing to MIC, or common statement " your phone ", these sound just typing in the corresponding paragraph.After in short having recorded, key in the END key, after U201 scans this key, at its 6 leg output high level.Above-mentioned Recording Process can be carried out repeatedly, also can carry out before individual's calling set is incorporated telephone wire into.
Embodiment illustrated in fig. 3 two for having individual's calling set of automatic sound-recording function.The difference of it and the foregoing description one is many button WR and a two-position switch K.Be connected in series a two-position switch K between the secondary of transformer T301 in its microphone in voice recording and playing back unit and decoding and the signal tone pretreatment unit, an output of microphone connects the fixed contact of preceding switch K:B, the moving contact of K:B connects the moving contact of back K switch: A, the fixed contact of K:A connects the secondary of transformer T301, and another moving contact of front and back two switches connects the microphone input of VODER respectively and replys the normally opened contact 1-3 of control relay RL701.When the user need record automatically to calling, press K switch, make 17 legs of U501 and T301 that one communication channel be arranged.Click the WR key in addition, after U201 scans the WR key, be about to this order and leave.After U201 confirms that bell signal is arranged, implement false off-hook, make the contact 2 of RL701 link to each other with 3, make U501 output voice " I am a telegraphone, and yor're through ", make the contact 1 of RL701 link to each other then with 3.This moment can be with calling content typing U501.It is identical with embodiment one to cancel actions such as false off-hook.The user will listen the calling recording, clicks the PLY key and gets final product.
Fig. 4 is embodiment three, and this is the individual's calling set that has the remote telephone function.It and embodiment one difference have a decoder U801 and output interface U802.U802 is a latch, and the address bus of microcomputer circuit connects two inputs 9 and 3 of decoder U801, and the data/address bus of microcomputer circuit meets the input port D1-D8 of latch U802.Two outputs 18 of decoder U801 and the clock end of 12 tap latch U802 11 and remove end 1.The output of U802 is 8 level control output ends, from 8 binding post outputs of individual's calling set shell.Hear " requesting individual number; pout " back when caller and key in " 00 " that key in the numeral between certain 1-8 again, then U201 makes the corresponding output leg of U802 be high potential, open to control certain equipment, simultaneously, U201 makes U501 export voice " XX equipment is opened " to caller, if after " 000 " is keyed in caller, key in certain numeral between the 1-8 again, the corresponding output leg of U201 military order U802 is low level, closing certain equipment, and makes U501 export voice " XX equipment is closed " to caller.This operation can be carried out repeatedly.At last, it is identical with embodiment one to cancel actions such as false off-hook.
Embodiment illustrated in fig. 5 four is all identical with embodiment one except that keyboard circuit, and its keyboard circuit is made up of two groups of switch U603 and U604, two data buffer U601 and U602, corresponding decoder U204:B～D.The input of this decoder meets signal pins WR and the RD of U201, two outputs of decoder meet the control pin 1G2G of two data buffer U601 and U602 respectively, and single-chip microcomputer U201 obtains the state of 16 switches among U603 and the U604 by the dateout that reads two data buffer U601 and U602 in turn.
Embodiment illustrated in fig. 6 five is all identical with embodiment one except that keyboard circuit, its keyboard circuit is made up of data buffer U602, charactron driver U601, charactron U603 and switches set U604, data buffer U602, both inputs of charactron driver U601 connect the data/address bus of microcomputer circuit, the output of data buffer U602 meets switches set U604, and the output of charactron driver U601 meets charactron U603.Single-chip microcomputer U201 shows individual number by charactron driver U601 and charactron U603, reads the state of switch among the U604 by data buffer U602.Whenever click switch P LS, then the numeral of charactron U603 demonstration increases one, whenever clicks switch NEG, and then the numeral of charactron U603 demonstration subtracts one, the numeral that U603 shows is current typing person's individual number, and another effect of U603 is to be used for display of calling to dial individual number.Keyboard circuit in the keyboard circuit alternate embodiments three of present embodiment, this moment, U602 can also be used to showing the number of times of automatic recording.
In the various embodiments described above, the grammed switch in the simulation off-hook unit is optoelectronic switch, electronic switch or transistor switch also.Ring-back control relay RL701 and calling control relay RL702 also can be substituted by the grammed switch of other type.
The utility model is suitable for all electronic telephones and by the dial telephone set of power supply for exchange.Easy to connect, can revise repeatedly after all voice typings, voice content is not lost after the power down.
Claims (6)
1. phone individual calling set with voice call function, one shell is arranged, it is characterized in that: connector, simulation off-hook, off-hook judgement, decoding and signal tone preliminary treatment, microcomputer circuit, recording keyboard, speech recording and reproducing, audio frequency output, all unit of power supply are housed in the shell, wherein:
The input of the output of described simulation off-hook unit, the input of described off-hook judging unit, described decoding and signal tone pretreatment unit connects described connector;
The control input of described simulation off-hook unit connects an output of described microcomputer circuit;
The output of described off-hook judging unit connects an input of described microcomputer circuit;
The output of described decoding and signal tone pretreatment unit connects the signal input of described microcomputer circuit;
The input/output signal line of described recording keyboard unit connects the data/address bus of described microcomputer circuit;
The address mouth of described voice recording and playing back unit connects the delivery outlet of described microcomputer circuit, the control input end of described voice recording and playing back unit connects the control output end of described microcomputer circuit, the input and the described connector of the described audio output unit of voice output termination of described voice recording and playing back unit.
2. a kind of phone individual calling set with voice call function as claimed in claim 1 is characterized in that:
Described simulation off-hook unit is composed in series by resistance and grammed switch, and its series arm and described connector also connect, and the control input of its grammed switch connects the output of described microcomputer circuit;
Described off-hook judging unit reaches the comparator that picks out from the output of this rectifier by rectifier and constitutes, and the input of its rectifier connects described connector, and the output of its comparator connects an input of described microcomputer circuit;
Described decoding and signal tone pretreatment unit are made of transformer, amplifier and decoder, the described connector of former edge joint of its transformer, the secondary of its transformer connects the input of its amplifier, in the output of its amplifier, one the tunnel connects an input of described microcomputer circuit, another road connects the input of its decoder, and the output of its decoder connects the signal input of described microcomputer circuit;
Described recording keyboard unit is made of push-button array, latch, bus receiver, the output of its latch connects the column scan signal line of its push-button array, the input of its bus receiver connects the line scan signals line of its push-button array, and the input of its latch and the output of bus receiver connect the data/address bus of described microcomputer circuit;
Described audio output unit is made of power amplifier and the loudspeaker that pick out from this power amplifier output;
Described voice recording and playing back unit is by VODER, microphone, the ring-back grammed switch, the calling grammed switch constitutes, the address mouth of its VODER connects the delivery outlet of described microcomputer circuit, the control input of its VODER connects the control output end of described microcomputer circuit, its microphone of microphone input termination of its VODER, the speech output end of its VODER connects the input of described connector and described audio output unit intermediate power amplifier respectively through the contact of two relay, two outputs of the described microcomputer circuit of control input tap of two grammed switch.
3. a kind of phone individual calling set as claimed in claim 1 with voice call function, it is characterized in that: described recording keyboard unit is made up of two groups of switches, two data buffers, corresponding decoders, the input of this decoder connects the output of described microcomputer circuit, and two outputs of this decoder connect the control pin of described two data buffers respectively.
4. a kind of phone individual calling set as claimed in claim 1 with voice call function, it is characterized in that: described recording keyboard unit is made of data buffer, charactron driver, charactron and switches set, described data buffer, both inputs of charactron driver connect the data/address bus of described microcomputer circuit, the output of described data buffer connects described switches set, and the output of described charactron driver connects described charactron.
5. a kind of phone individual calling set as claimed in claim 2 with voice call function, it is characterized in that: be connected in series a two-position switch between the secondary of the transformer in the microphone in the described voice recording and playing back unit and described decoding and the signal tone pretreatment unit, an output of described microphone connects the fixed contact of last switch, a moving contact of last switch connects a moving contact of back one switch, the fixed contact of back one switch connects the secondary of described transformer, and another moving contact of front and back two switches connects the microphone input and the described ring-back grammed switch of described VODER respectively.
6. a kind of phone individual calling set as claimed in claim 2 with voice call function, it is characterized in that: the address bus of described microcomputer circuit connects decoder, the data/address bus of described microcomputer circuit connects latch, its address bus connects two inputs of its decoder, its data/address bus connects the input port of its latch, the clock end and the removing end of two its latchs of output termination of its decoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96208096 CN2256198Y (en) | 1996-04-24 | 1996-04-24 | Individual calling device with speeching function for telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96208096 CN2256198Y (en) | 1996-04-24 | 1996-04-24 | Individual calling device with speeching function for telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2256198Y true CN2256198Y (en) | 1997-06-11 |
Family
ID=33892223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96208096 Expired - Fee Related CN2256198Y (en) | 1996-04-24 | 1996-04-24 | Individual calling device with speeching function for telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2256198Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830657A (en) * | 2019-11-20 | 2020-02-21 | 陕西科技大学 | Smart phone communication system and communication method |
-
1996
- 1996-04-24 CN CN 96208096 patent/CN2256198Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830657A (en) * | 2019-11-20 | 2020-02-21 | 陕西科技大学 | Smart phone communication system and communication method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |